Pulp-washing apparatus.



No. 702,556. I 'Patented :une |74, A902.

A. HINZKE. PULP WASHING APPARATUS.

` (Application led Feb, 27, 1902.) (No Model.) f v 3 sheets-*sheet 4.'

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Patented lune I7, |902. A. HNZYKE. PULP WASHING APPARATUS. :s (Appl'ictionmednmv,19027) 3 Sheets-shut 2.

(Nov Model.)

lNrrs STATES PATENT einen.

ALBET HINZKE, OF RUMFORD FALLS, MAINE.

PULP-WASHING APPARATUS.

SPECIFECATION forming part of Letters Patent No. 702,556, dated une 17, 1902. Application iiled February 27, 1902.l Serial No. 95,888. ltNc rroclel-`l To @ZZ whom iter/taryconcer-7e:V

Beit known that I, ALBERT HINZKE, a citizen of lthe United States, residing at Rumford Falls, in the county of Oxford and `State ofl Maine, have invented certain newiandfus'eful` Improvements in Pulp-Washing Apparatus;

an apparatus of .this character which is com-y paratively simplefof construction and inexpensive of production, of maximum efciency in use,'and adapted to effect the washing of the pulp or material without the necessity of employing agitators or'power-operated appli-V ances.

With this and other objects in View, which will readily appear as the nature of the invention is better understood, said invention consists in certain novel features of construction and combination and `arrangement of' parts, which will be hereinafter more fullyv described, defined in the appendedvclaims,

and illustrated inthe accompanying drawings, in which chambers 3 by stationary longitudinal par- ,titions' 4, stationary transverse partitions 5, a central series of movable longitudinal 55 partitions 6, and transverse movable partitions 7, `each of said movable partitions con- 'sisting of a vertically-slidable gate or valve,

e the tank, forming underIiow-passages 9, connecting the transverse rows of chambers in alternation with the central longitudinal row of 65 movable partitions 6. The stationary transverse partitions 5, however, extend vertically the full depthof the tank and close communication between the longitudinal rows of chambers except at the points where the mov- 7o able transverse partitions 7 are located. As

shown, these partitions 7 are disposed alternately, with the partitions 5 in the two outer longitudinal rows on opposite sides of the tank,

the partitions 7 of one row being also disposed 75 longitudinal row alternately communicate 8o through the gates 6, and the transverse rows .of-chamberscommunicate with each other through the gates 7 and the underflow-passages 9. The two sets o`f gates or movable parti-4 The stationarylongitudinal par- 6o tions 6 and 7 normally close communication 85 between the lower ends of the chambers, but are of less length or depth than said cham' bers, so that the spaces above said gates form overow-passages lO.` Hence it will be seen that the pulp and Water iiowing through the 9o Figure 1 is a top plan-view of. awashing apparatus constructed in accordance with my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical longitudinal section on the line 3 3 of'Fig. l. Fig. t is avertical transverse section on the line 4 4 of Fig. 1.

Referring now more particularly to the drawings, the numeral l represents a washing-tank, which may be of. any desired size and construction, but preferably is of oblong rectangular form and open at the top. This tank rests upon a frame or foundation cor n.

tank are caused to take a back-and-forth zig-v zag course through the chambers and in passing from one chamber-to the other alternately flow upwardly and downwardly,thereby insuring a course of sufficient length in a com-i` paratively short tank and the proper amount of agitation to effect the thorough washing of the pulp or material-and `the i separation of tho'foreignsubstances therefrom.

The impure pulp isufed into one of, the end roo chambers of one of the longitudinal rows through a feed pipe or conductor 11, provided, with a gate or valve 12, while the purified or washed pulp discharges from the opposite end chamber of the same row through an outlet pipe orconductor18, havinga controlling gate or valve 14. Thus it willbe seen that the pulp will How from the inlet-chamber across the tank through the chambers in the same transverse row, then back through the chambers of the next transverse row, and so on until the outlet-chamber is reached, when the puriiied pulp and clean water will discharge through a the pipe 13, which is intended to convey the same to a storage-tank, (not shown,) in which the Water is allowed to drain off. The flow of the pulp and water is of course facilitated by having the tank inclined to cause a circu- 5 lation by the force of gravity. Also communicating with the discharge-chamber is a residuum-discharge pipe and a valve or gate 16, controlling the iiow of the residuum therreto. a Located above the bottom proper of the tank is a perforated false bottom 17, having a sheathing or cover ot' copper having alined perforations; and between this false bottom and the bottom of the tank are formed transverse passages 18, which communicate at their outer ends with a trough 19, formed around the sides and lower or discharge end of the tank, and with a series of vertical chan nels or conductors 20, located upon the sides a of the tank above said trough. The water discharging from the chambers 3 flows through the false bottom 17 into the channels or passages 18 and thence directly7 into the trough or through the conductors 20 to the trough. In each of the conductors 20 is arranged two gates or valves 21 and 22, one of which is up while the other is down, and the valve 22 is adapted, when forced down, to close the passage 18 from communication with the trough 19 and to cause the water to flow into the conductor 20, thence up through said conductor to a point above the level of the gate 2l and thence over said gate and down through said conductor to the trough 19. Vhen the valve 22 is moved upwardly to open communication between the channels 18 and trough 19, the valve 21 is closed down, leaving a space below it through which the water from the chamber passes directly into said trough. Arranged above the tank and extendinglongitudinally thereof is a Water-supply pipe 23, which is provided with a series of branch pipes 24, each having a controlling-valve 25. The several branch pipes communicate with the different chambers or compartments in the tank to supply water thereto and are provided at their ends with nozzles or sprinklers 2G, through which the water is sprayed into the chambers. The water thus supplied to the chambers lirst commingles with the pulp, which is in motion in the zigzag passage-way and is caused by the agitation produced to wash the pulp and to take up the acids and foreign substances, and this action is continued throughout the entire length of the passage-way, the water constantly flowing from the branch pipes into the chambers and as constantly discharging, after taking up the foreign matters from the pulp, through the perforated bottom 17 into the passages 18 and thence to the trough 19. By this means the pulp is gradually washed on its passage through the zigzag passage-way, so that when it reaches the outer chamber it is purified or :relieved of the acids and foreign substances and is ready to be discharged through the pipe 13 and conveyed to a storage-tank, in which the clear water is allowed to drain from the pulp. The pipe 23 is also provided with a branch 27, which communicates with the lower end of the trough 19 and is provided with a valve 28 for controlling the tiow of water therethrough. This pipe is of relatively larger diameter than the branch pipes 24 and is designed as a hush-pipe Vfor supplying water to the trough 19 to flush the tank with water to carry off the residuu m or deposits left therein after the entire charge of pulp has been allowed to pass out through the pipe 13.

In cleaning or iiushing the tank the valves 21 are closed, the valves 22 opened to afford communication between the passages 18 and trough 19, and then the valves 25 of the branch pipes 2a and the valve 28 of the pipe 27 are opened to allow the water to flow into the chambers 3 and into the trough 19. After this has been done the gates (i and 7 of the chambers 3 at the upper end ef the tank are opened and the water from the trough 19, which flows into said chambers through the passages 18 and perforated bottom 17, is al lowed to flow across the surface of said bottom, and this operation is continued along the entire length of the tank, the valves or gates of the chambers being opened in regular order or succession until the entire surface of the bottom 17 is cleaned, and the residuum is carried to thelower end of the tank, where it discharges through the Waste-pipe 29, provided with a controlling gate or valve 30.

When the movable partitions or gates G and rFare drawn upwardly or opened, communication is directly established between the lower ends of those chambers which are normallyin communication only through the overflow-pas sages, so that a better circulation of the water may be obtained in cleaning the surface of the bottom 17 and forcing the residuum to the lower end of the tank for discharge through the pipe 29.

In the operation of the apparatus it is found that by constructing the tank witha series of compartments forming a zigzagchannel or course for the water and having alternate over and under iow passages in said channel the course is made of the necessary length for obtaining a thorough washing of the pulp or material without the necessity of employing a tank of abnormal size, so that when the pulp reaches the lower chambers or compartments it is thoroughly purified and ready to be discharged through the pipe 13 into a storage-tank :for use.

From the foregoing description, taken in IOC IIO

connection with the accompanying drawings, it is thought that the construction, mode of operation, and advantages of my improved pulp-washing apparatus will be readily apparent Without requiring a more extended ex' munication with the end chambers of the next adjacent rows at opposite sides'of the tank, `forming a zigzag passage, substantially as described. Y e

2. A washing-tank comprising an inclined trough having a zigzagged longitudinal passage-wayconsisting of verticall chambers arranged in longitudinall and transverse rows, said chambers being formed of fixed and movable partitions, the fixed partitions in the` transverse rows forming underflow and the movable partitions overow passages, substantially as specified.'

3. A washingtank comprising an inclined trough having a zigzagged longitudinal passage-way provided with alternate over and under ow passages, substantially as and for the purpose specied.

4. A washing-tank comprising an inclinedI trough having a zigzagged longitudinal 'passage-way consisting ofvertical chambers arranged in longitudinal'and transverse rows, said chambers'being formed of fixed and movable partitions, the xed4 partitions in the transverse rows forming underflow and the movable partitions overflow passages, means for controlling the inflow and discharge of the pulp and the discharge of the residuum,

a water-supply pipe, meansi'or4l conveying f water from'said supply-pipe to said chambers,

andmeans for also supplying vwater fromsaid f `pipefor'iushingtheinterior of the' tank to wash away the residuum, substantially as set forth. l

5; A washing-tank having azigzagpassageway consistingof vertical'chambers arranged in longitudinal and transverse'rows, said chambers being formed by longitudinal and transverse stationary partitions fand longitudinal and transverse vmovable partitions, the

rlongitudinal stationary y partitions" forming underflow and the movable partitions overlowpassages, saidmovable partitions being capable'of an upward adjustment to also'form underflow-passages for thecirculation of water along the bottom of the tank, substantially as described.

6. An apparatus of the character described comprising a tank provided with" a zigzag passage-way, anda perforate false bottom with passages below the false bottom forithe'discharge ofthefwaste water, a trough'communicating with said passages, valves establishing communication between the passages and trough, and means for'supplyin-g water to the trough and passage-way forcleaning the interior of the tank, substantially asspecifled. n 7. In Aan apparatus of the Acharacter described, the combination of a tank'provided with chambers forming an irregular or zigzag passagefway for the circulation of the pulp, with means for controlling theinlow anddischarge'of the pulpand thedischarge of the.

residuum, a water -supply pipe, ,j means for conveying Water from said supply-pipe to said,` chambers, and means for yalso supplying water from said pipe forflu'shing theinterior of thetank to wash away the residuum, substantially as yspeciied.

In testimony whereof I" have hereunto'` set my hand in presence of two subscribing wit-` y DBSSBS.

` ALBERT HINZKE.

Witnesses: e

SADIE L. TAINTER, ELWIN H. GrLEAsoVN.l 

